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(70387) 1999 RW221

asteroid
Place asteroid Q15183820
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(70387) 1999 RW221

Summary

(70387) 1999 RW221 is an asteroid[1].

Key Facts

  • (70387) 1999 RW221 is credited with the discovery of Spacewatch[2].
  • (70387) 1999 RW221's instance of is recorded as asteroid[3].
  • (70387) 1999 RW221's site of astronomical discovery is recorded as Kitt Peak National Observatory[4].
  • (70387) 1999 RW221 followed (70386) 1999 RO220[5].
  • (70387) 1999 RW221 was followed by Q8334877[6].
  • (70387) 1999 RW221's minor planet group is recorded as asteroid belt[7].
  • (70387) 1999 RW221's parent astronomical body is recorded as Sun[8].
  • (70387) 1999 RW221's provisional designation is recorded as 2002 GB19[9].
  • (70387) 1999 RW221's provisional designation is recorded as 1999 RW221[10].
  • (70387) 1999 RW221's provisional designation is recorded as 1999 NJ12[11].
  • (70387) 1999 RW221's time of discovery or invention is recorded as September 6, 1999[12].
  • (70387) 1999 RW221's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1520526695728665'}[13].
  • (70387) 1999 RW221's absolute magnitude is recorded as {'unit': '1', 'amount': '+16.33'}[14].
  • (70387) 1999 RW221's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+2.127568980603605'}[15].
  • (70387) 1999 RW221's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1279.414227293233'}[16].
  • (70387) 1999 RW221's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+318.8216805694565'}[17].
  • (70387) 1999 RW221's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.30643825454977'}[18].
  • (70387) 1999 RW221's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.657138348359045'}[19].
  • (70387) 1999 RW221's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+1.955738160740495'}[20].
  • (70387) 1999 RW221's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+308.5543117895982'}[21].
  • (70387) 1999 RW221's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+107.0148776052445'}[22].
  • (70387) 1999 RW221's epoch is recorded as October 17, 2024[23].
  • (70387) 1999 RW221's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2460220.1767862774'}[24].

Body

Designation and Status

(70387) 1999 RW221's instance of is recorded as asteroid[3].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). (70387) 1999 RW221. Retrieved May 3, 2026, from https://4ort.xyz/entity/-70387-1999-rw221
MLA “(70387) 1999 RW221.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-70387-1999-rw221.
BibTeX @misc{4ortxyz_-70387-1999-rw221_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(70387) 1999 RW221}}, year = {2026}, url = {https://4ort.xyz/entity/-70387-1999-rw221}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (70387) 1999 RW221 — https://4ort.xyz/entity/-70387-1999-rw221 (retrieved 2026-05-03)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 5w ago · LiMrBot bot · 2026-05-14 view diff on Wikidata ↗
    Time of periapsis → {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount':
    Epoch → October 17, 2024
    Orbital inclination → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Periapsis → {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ [[Property:P1457]]: 16.33"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.